# Measurement of 73Ge(n,g) cross sections and implications for stellar nucleosynthesis

## TL;DR

This study provides new experimental measurements of 73Ge(n,g) cross sections at energies up to 300 keV, revealing higher values than predictions and impacting models of stellar nucleosynthesis and isotopic abundances.

## Contribution

First experimental data for 73Ge(n,g) cross sections above 8 keV, improving understanding of stellar nucleosynthesis processes.

## Key findings

- Measured cross sections up to 300 keV
- Found cross section at 30 keV is 1.5-1.7 times higher than predictions
- Results suggest less 73Ge produced in stars, explaining low solar abundance

## Abstract

73Ge(n,g) cross sections were measured at the neutron time-of-flight facility n_TOF at CERN up to neutron energies of 300 keV, providing for the first time experimental data above 8 keV. Results indicate that the stellar cross section at kT = 30 keV is 1.5 to 1.7 times higher than most theoretical predictions. The new cross sections result in a substantial decrease of 73Ge produced in stars, which would explain the low isotopic abundance of 73Ge in the solar system.